arch/sh/include/asm/ptrace.h

   1 #ifndef __ASM_SH_PTRACE_H
   2 #define __ASM_SH_PTRACE_H
   3
   4 /*
   5  * Copyright (C) 1999, 2000  Niibe Yutaka
   6  *
   7  */
   8 #if defined(__SH5__)
   9 struct pt_regs {
  10         unsigned long long pc;
  11         unsigned long long sr;
  12         unsigned long long syscall_nr;
  13         unsigned long long regs[63];
  14         unsigned long long tregs[8];
  15         unsigned long long pad[2];
  16 };
  17 #else
  18 /*
  19  * GCC defines register number like this:
  20  * -----------------------------
  21  *       0 - 15 are integer registers
  22  *      17 - 22 are control/special registers
  23  *      24 - 39 fp registers
  24  *      40 - 47 xd registers
  25  *      48 -    fpscr register
  26  * -----------------------------
  27  *
  28  * We follows above, except:
  29  *      16 --- program counter (PC)
  30  *      22 --- syscall #
  31  *      23 --- floating point communication register
  32  */
  33 #define REG_REG0         0
  34 #define REG_REG15       15
  35
  36 #define REG_PC          16
  37
  38 #define REG_PR          17
  39 #define REG_SR          18
  40 #define REG_GBR         19
  41 #define REG_MACH        20
  42 #define REG_MACL        21
  43
  44 #define REG_SYSCALL     22
  45
  46 #define REG_FPREG0      23
  47 #define REG_FPREG15     38
  48 #define REG_XFREG0      39
  49 #define REG_XFREG15     54
  50
  51 #define REG_FPSCR       55
  52 #define REG_FPUL        56
  53
  54 /*
  55  * This struct defines the way the registers are stored on the
  56  * kernel stack during a system call or other kernel entry.
  57  */
  58 struct pt_regs {
  59         unsigned long regs[16];
  60         unsigned long pc;
  61         unsigned long pr;
  62         unsigned long sr;
  63         unsigned long gbr;
  64         unsigned long mach;
  65         unsigned long macl;
  66         long tra;
  67 };
  68
  69 /*
  70  * This struct defines the way the DSP registers are stored on the
  71  * kernel stack during a system call or other kernel entry.
  72  */
  73 struct pt_dspregs {
  74         unsigned long   a1;
  75         unsigned long   a0g;
  76         unsigned long   a1g;
  77         unsigned long   m0;
  78         unsigned long   m1;
  79         unsigned long   a0;
  80         unsigned long   x0;
  81         unsigned long   x1;
  82         unsigned long   y0;
  83         unsigned long   y1;
  84         unsigned long   dsr;
  85         unsigned long   rs;
  86         unsigned long   re;
  87         unsigned long   mod;
  88 };
  89
  90 #define PTRACE_GETREGS          12      /* General registers */
  91 #define PTRACE_SETREGS          13
  92
  93 #define PTRACE_GETFPREGS        14      /* FPU registers */
  94 #define PTRACE_SETFPREGS        15
  95
  96 #define PTRACE_GETFDPIC         31      /* get the ELF fdpic loadmap address */
  97
  98 #define PTRACE_GETFDPIC_EXEC    0       /* [addr] request the executable loadmap */
  99 #define PTRACE_GETFDPIC_INTERP  1       /* [addr] request the interpreter loadmap */
 100
 101 #define PTRACE_GETDSPREGS       55      /* DSP registers */
 102 #define PTRACE_SETDSPREGS       56
 103 #endif
 104
 105 #ifdef __KERNEL__
 106 #include <asm/addrspace.h>
 107
 108 #define user_mode(regs)                 (((regs)->sr & 0x40000000)==0)
 109 #define instruction_pointer(regs)       ((unsigned long)(regs)->pc)
 110
 111 extern void show_regs(struct pt_regs *);
 112
 113 /*
 114  * These are defined as per linux/ptrace.h.
 115  */
 116 struct task_struct;
 117
 118 #define arch_has_single_step()  (1)
 119 extern void user_enable_single_step(struct task_struct *);
 120 extern void user_disable_single_step(struct task_struct *);
 121
 122 #ifdef CONFIG_SH_DSP
 123 #define task_pt_regs(task) \
 124         ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
 125                  - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
 126 #define task_pt_dspregs(task) \
 127         ((struct pt_dspregs *) (task_stack_page(task) + THREAD_SIZE \
 128                  - sizeof(unsigned long)) - 1)
 129 #else
 130 #define task_pt_regs(task) \
 131         ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
 132                  - sizeof(unsigned long)) - 1)
 133 #endif
 134
 135 static inline unsigned long profile_pc(struct pt_regs *regs)
 136 {
 137         unsigned long pc = instruction_pointer(regs);
 138
 139 #ifdef P2SEG
 140         if (pc >= P2SEG && pc < P3SEG)
 141                 pc -= 0x20000000;
 142 #endif
 143
 144         return pc;
 145 }
 146 #endif /* __KERNEL__ */
 147
 148 #endif /* __ASM_SH_PTRACE_H */